Mediatek Corporation

Mediatek Incorporation

Tsung-Yueh Shih

Chi-Mou Chao

Jenn-Ning Yang

Daw-I Wang

The system and method is used for CAV (Constant Angular Velocity) control format recording, whereas the existing disk data is recorded under CLV (Constant Linear Velocity) control format recording. When the PUH receives a laser driver signal, it generates a feed signal and a wobble signal. The feed signal is received by the automatic power control; thereafter the automatic power control generates a first control signal used for causing the laser driver to adjust the laser driver signal. After the ATIP decoder receives the wobble signal, the ATIP decoder generates and outputs ATIP decoded data to the CLV value detector. The CLV value detector receives ATIP decoded data and generates a CLV decoded data to the laser power control. The laser power control receives the CLV decoded data and generates a second control signal used for causing the automatic power control to adjust the first control signal.

System for constant angular velocity disk recording and method for laser power control thereof

An encoding method for an optical recorder provides an optical recorder with an encoder for encoding data received from a computer. Additionally, the optical recorder includes a processor for controlling operations of the encoder. The encoding method includes receiving data of a next mode, which is different from a current mode, from the computer even when the encoder is still encoding data of the current mode.

Growing community of inventors

Hsin-Chu Hsien, Taiwan

Tsung-Yueh Shih